Alignment inspection apparatus for electrode assembly and alignment inspection method for electrode assembly using the same

An alignment inspection apparatus for an electrode assembly comprising:

• a laminate in which a first separator, an internal electrode, a second separator, and an upper electrode are sequentially stacked in a first direction, the upper electrode forming a top surface of the electrode assembly,
• a camera disposed in the first direction above a central portion of the electrode assembly to photograph and inspect the electrode assembly;
• side lights at an oblique angle to an upper surface of the electrode assembly, the side lights irradiating light onto each of both ends of the upper electrode, which are symmetrical to each other with respect to the central portion of the electrode assembly;
• a controller measuring an alignment state of the electrode assembly through photographed information of the electrode assembly observed through the camera;
• and
• an internal electrode tab extending from the internal electrode in a second direction, the second direction being perpendicular to the first direction,
• wherein the controller measures a distance in the second direction between one end of the internal electrode tab and one end of the upper electrode of the electrode assembly.